I was creeping through the Korg forum and found this topic on how Kronos users find the Roland V-Synth an interesting and experimental instrument and how the Roland V-Synth's "Variphrase" sample manipulation concept is not present in the Korg Kronos. This is one reason among other things that Kronos users admire about the Roland V-Synth and its capabilities.

http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=62519&highlight=roland+vsynth